According to the New Hampshire Attorney General’s Office, when Lafont answered his door, he was holding a revolver. Kibbe repeatedly told Lafont to drop the weapon, but he didn’t, according to the investigation.

Investigators said Lafont opened the door, smiled at Kibbe and stepped toward him, moving the gun in the officer’s direction. Fearing that Lafont was going to fire, Kibbe fired at Lafont, hitting him three times in the chest and killing him.

Lafont’s gun was later determined to be unloaded.

The Attorney General’s Office said it was reasonable for Kibbe to think he was in immediate danger.

Investigators said it was unclear why Lafont acted like he did. Witnesses said he had been drinking excessively the night before, and he struggled with bouts of depression. He would often call 911, and the morning he was shot, he called 911 four times, saying that he wasn’t thinking straight and that he needed to talk with someone.

In earlier interactions with police, Lafont was sometimes described as hostile or belligerent, but never openly violent, according to the report.

Investigators said Lafont had become increasingly concerned that he was going to jail within weeks because of failing to complete alcohol counseling in connection with several misdemeanor charges.